simmechanic link istallation problem

I have 64-bit Solidworks2017 and 64-bit MATLAB R2017a.

the Simmechanics Link option in solidworks is not appear so, i try to install simmechanic link in matlab by the following instruction

install_addon('smlink.r2017a.win64.zip') but the installation is not completed the massege that i got it as belo

Error using install_addon (line 52) Access is denied.

can any one help me please what is the problem and how can i solve it